Speaker box



FIG. 1 is a front view of a speaker box, showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof, shown in enlarged scale;

FIG. 6 is a bottom view thereof, shown in enlarged scale; and,

FIG. 7 is a front perspective view thereof.

The broken lines in the figures illustrate the portions of the design that form no part of the claimed design. 

CLAIM The ornamental design for a speaker box, as shown and described. 